Joe writes:

My wife accidentally had put a hot pot from the burner to the
countertop and immediately saw what she did and removed it, but it
left a partial 'burnt' bottom on it. I tried to remove the stain with
some bleach and water mixed, then just bleach and finally a Brillo
soap pad...all with no luck. I even used the Bars Keeper Friend. Its
just a stain, not a penetration. Anyone here have other suggestions
how to get rid of that stain? Thanks

Silestone appears to be sold with a 25 year guarantee.
So my advice is call them up.

Our Corian suffered a major crack.
The company came out and fixed it free of charge.
So DIY is not really the way to go with these things.
If you have a guarantee, use it.

--
Dan Espen